Highly pigmented shampoo neutralizing sulfate-free sls / sles. Goodbye yellow is the first highly pigmented anti-yellow shampoo from schwarzkopf professional. This shampoo, free of sls / sles, provides a gentle cleansing action and deposits tonal pigments instantly that counteract and neutralize the underlying warm tones. Its unique combination of purple and blue direct pigments has been created to neutralize the unwanted underlying yellow tones while its formula gently cleanses the hair with a pH adjusted to the value of ph 4.5 for effective and lasting results. Say hello to a crisp, bright and pretty blond Technology goodbye yellow anti-yellow shampoo quickly neutralizes any unwanted underlying yellow shade in rinsed hair in the headgear for instant super cold blonde results. Formula:  Its unique formula with ph 4.5 helps color pigments adhere to hair quickly for maximum neutralization. A combination of color deposits and active washing substances makes it possible to neutralize, wash and care for hair in one step. How to use: • Leave on for 5 minutes (if necessary, prolong the exposure time for an even larger pigment deposit). • Use daily for maximum pigment deposit. • Use 1-2 times per week for tone maintenance.